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Finding the Fourth Proportional to 475,878.92, 713,923.98 and 143,430.92

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Solution

The fourth proportional to 475,878.92, 713,923.98 and 143,430.92 is: 215,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,878.92 : 713,923.98 = 143,430.92 : x
  2. Step 2: Convert to fraction form
    475,878.92/713,923.98 = 143,430.92/x
  3. Step 3: Cross multiply
    475,878.92x = 713,923.98 × 143,430.92
  4. Step 4: Simplify right side
    475,878.92x = 102,398,773,261.46
  5. Step 5: Solve for x
    x = 102,398,773,261.46/475,878.92
  6. Step 6: Final answer
    x = 215,178.21

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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.