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Finding the Fourth Proportional to 386,329,876.80, 579,494,815.20 and 232,896,955.20

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Solution

The fourth proportional to 386,329,876.80, 579,494,815.20 and 232,896,955.20 is: 349,345,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,329,876.80 : 579,494,815.20 = 232,896,955.20 : x
  2. Step 2: Convert to fraction form
    386,329,876.80/579,494,815.20 = 232,896,955.20/x
  3. Step 3: Cross multiply
    386,329,876.80x = 579,494,815.20 × 232,896,955.20
  4. Step 4: Simplify right side
    386,329,876.80x = 134,962,578,014,266,688
  5. Step 5: Solve for x
    x = 134,962,578,014,266,688/386,329,876.80
  6. Step 6: Final answer
    x = 349,345,432.80

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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.