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Finding the Fourth Proportional to 211,428,298.80, 296,679,862.80 and 211,428,298.80

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Solution

The fourth proportional to 211,428,298.80, 296,679,862.80 and 211,428,298.80 is: 296,679,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,428,298.80 : 296,679,862.80 = 211,428,298.80 : x
  2. Step 2: Convert to fraction form
    211,428,298.80/296,679,862.80 = 211,428,298.80/x
  3. Step 3: Cross multiply
    211,428,298.80x = 296,679,862.80 × 211,428,298.80
  4. Step 4: Simplify right side
    211,428,298.80x = 62,726,518,680,021,408
  5. Step 5: Solve for x
    x = 62,726,518,680,021,408/211,428,298.80
  6. Step 6: Final answer
    x = 296,679,862.80

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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.