Home / 288,187,128.96-397,693,490.44-156,027,068.88

Finding the Fourth Proportional to 288,187,128.96, 397,693,490.44 and 156,027,068.88

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Solution

The fourth proportional to 288,187,128.96, 397,693,490.44 and 156,027,068.88 is: 215,314,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,187,128.96 : 397,693,490.44 = 156,027,068.88 : x
  2. Step 2: Convert to fraction form
    288,187,128.96/397,693,490.44 = 156,027,068.88/x
  3. Step 3: Cross multiply
    288,187,128.96x = 397,693,490.44 × 156,027,068.88
  4. Step 4: Simplify right side
    288,187,128.96x = 62,050,949,626,009,496
  5. Step 5: Solve for x
    x = 62,050,949,626,009,496/288,187,128.96
  6. Step 6: Final answer
    x = 215,314,784.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.