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Finding the Fourth Proportional to 306,053,139.40, 429,381,387.80 and 306,053,139.40

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Solution

The fourth proportional to 306,053,139.40, 429,381,387.80 and 306,053,139.40 is: 429,381,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,053,139.40 : 429,381,387.80 = 306,053,139.40 : x
  2. Step 2: Convert to fraction form
    306,053,139.40/429,381,387.80 = 306,053,139.40/x
  3. Step 3: Cross multiply
    306,053,139.40x = 429,381,387.80 × 306,053,139.40
  4. Step 4: Simplify right side
    306,053,139.40x = 131,413,521,736,118,848
  5. Step 5: Solve for x
    x = 131,413,521,736,118,848/306,053,139.40
  6. Step 6: Final answer
    x = 429,381,387.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.