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Finding the Fourth Proportional to 240,428.40, 331,762.28 and 138,487.02

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Solution

The fourth proportional to 240,428.40, 331,762.28 and 138,487.02 is: 191,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,428.40 : 331,762.28 = 138,487.02 : x
  2. Step 2: Convert to fraction form
    240,428.40/331,762.28 = 138,487.02/x
  3. Step 3: Cross multiply
    240,428.40x = 331,762.28 × 138,487.02
  4. Step 4: Simplify right side
    240,428.40x = 45,944,768,607.71
  5. Step 5: Solve for x
    x = 45,944,768,607.71/240,428.40
  6. Step 6: Final answer
    x = 191,095.43

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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.