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Finding the Fourth Proportional to 387,730.80, 581,692.20 and 177,324.40

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Solution

The fourth proportional to 387,730.80, 581,692.20 and 177,324.40 is: 266,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,730.80 : 581,692.20 = 177,324.40 : x
  2. Step 2: Convert to fraction form
    387,730.80/581,692.20 = 177,324.40/x
  3. Step 3: Cross multiply
    387,730.80x = 581,692.20 × 177,324.40
  4. Step 4: Simplify right side
    387,730.80x = 103,148,220,349.68
  5. Step 5: Solve for x
    x = 103,148,220,349.68/387,730.80
  6. Step 6: Final answer
    x = 266,030.50

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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.