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Finding the Fourth Proportional to 240,607,978.39, 332,030,417.52 and 136,183,807.50

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Solution

The fourth proportional to 240,607,978.39, 332,030,417.52 and 136,183,807.50 is: 187,928,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,607,978.39 : 332,030,417.52 = 136,183,807.50 : x
  2. Step 2: Convert to fraction form
    240,607,978.39/332,030,417.52 = 136,183,807.50/x
  3. Step 3: Cross multiply
    240,607,978.39x = 332,030,417.52 × 136,183,807.50
  4. Step 4: Simplify right side
    240,607,978.39x = 45,217,166,463,688,304
  5. Step 5: Solve for x
    x = 45,217,166,463,688,304/240,607,978.39
  6. Step 6: Final answer
    x = 187,928,790.92

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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.