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Finding the Fourth Proportional to 298,935,615.40, 448,403,423.10 and 137,377,551.40

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Solution

The fourth proportional to 298,935,615.40, 448,403,423.10 and 137,377,551.40 is: 206,066,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,935,615.40 : 448,403,423.10 = 137,377,551.40 : x
  2. Step 2: Convert to fraction form
    298,935,615.40/448,403,423.10 = 137,377,551.40/x
  3. Step 3: Cross multiply
    298,935,615.40x = 448,403,423.10 × 137,377,551.40
  4. Step 4: Simplify right side
    298,935,615.40x = 61,600,564,304,856,200
  5. Step 5: Solve for x
    x = 61,600,564,304,856,200/298,935,615.40
  6. Step 6: Final answer
    x = 206,066,327.10

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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.