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Finding the Fourth Proportional to 268,656,538.80, 402,984,808.20 and 98,433,332.40

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Solution

The fourth proportional to 268,656,538.80, 402,984,808.20 and 98,433,332.40 is: 147,649,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,656,538.80 : 402,984,808.20 = 98,433,332.40 : x
  2. Step 2: Convert to fraction form
    268,656,538.80/402,984,808.20 = 98,433,332.40/x
  3. Step 3: Cross multiply
    268,656,538.80x = 402,984,808.20 × 98,433,332.40
  4. Step 4: Simplify right side
    268,656,538.80x = 39,667,137,577,700,848
  5. Step 5: Solve for x
    x = 39,667,137,577,700,848/268,656,538.80
  6. Step 6: Final answer
    x = 147,649,998.60

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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.