Home / 288,000.51-397,437.90-158,940.18

Finding the Fourth Proportional to 288,000.51, 397,437.90 and 158,940.18

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Solution

The fourth proportional to 288,000.51, 397,437.90 and 158,940.18 is: 219,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,000.51 : 397,437.90 = 158,940.18 : x
  2. Step 2: Convert to fraction form
    288,000.51/397,437.90 = 158,940.18/x
  3. Step 3: Cross multiply
    288,000.51x = 397,437.90 × 158,940.18
  4. Step 4: Simplify right side
    288,000.51x = 63,168,851,364.82
  5. Step 5: Solve for x
    x = 63,168,851,364.82/288,000.51
  6. Step 6: Final answer
    x = 219,335.90

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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.