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Finding the Fourth Proportional to 487,061.94, 730,249.47 and 187,290.66

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Solution

The fourth proportional to 487,061.94, 730,249.47 and 187,290.66 is: 280,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,061.94 : 730,249.47 = 187,290.66 : x
  2. Step 2: Convert to fraction form
    487,061.94/730,249.47 = 187,290.66/x
  3. Step 3: Cross multiply
    487,061.94x = 730,249.47 × 187,290.66
  4. Step 4: Simplify right side
    487,061.94x = 136,768,905,200.95
  5. Step 5: Solve for x
    x = 136,768,905,200.95/487,061.94
  6. Step 6: Final answer
    x = 280,803.93

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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.