Home / 261,645,605.40-392,468,408.10-79,892,491.80

Finding the Fourth Proportional to 261,645,605.40, 392,468,408.10 and 79,892,491.80

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Solution

The fourth proportional to 261,645,605.40, 392,468,408.10 and 79,892,491.80 is: 119,838,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,645,605.40 : 392,468,408.10 = 79,892,491.80 : x
  2. Step 2: Convert to fraction form
    261,645,605.40/392,468,408.10 = 79,892,491.80/x
  3. Step 3: Cross multiply
    261,645,605.40x = 392,468,408.10 × 79,892,491.80
  4. Step 4: Simplify right side
    261,645,605.40x = 31,355,279,075,888,304
  5. Step 5: Solve for x
    x = 31,355,279,075,888,304/261,645,605.40
  6. Step 6: Final answer
    x = 119,838,737.70

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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.