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Finding the Fourth Proportional to 288,645.60, 432,312.30 and 148,240.20

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Solution

The fourth proportional to 288,645.60, 432,312.30 and 148,240.20 is: 222,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,645.60 : 432,312.30 = 148,240.20 : x
  2. Step 2: Convert to fraction form
    288,645.60/432,312.30 = 148,240.20/x
  3. Step 3: Cross multiply
    288,645.60x = 432,312.30 × 148,240.20
  4. Step 4: Simplify right side
    288,645.60x = 64,086,061,814.46
  5. Step 5: Solve for x
    x = 64,086,061,814.46/288,645.60
  6. Step 6: Final answer
    x = 222,023.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.