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Finding the Fourth Proportional to 487,145.70, 730,702.08 and 171,594.36

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Solution

The fourth proportional to 487,145.70, 730,702.08 and 171,594.36 is: 257,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,145.70 : 730,702.08 = 171,594.36 : x
  2. Step 2: Convert to fraction form
    487,145.70/730,702.08 = 171,594.36/x
  3. Step 3: Cross multiply
    487,145.70x = 730,702.08 × 171,594.36
  4. Step 4: Simplify right side
    487,145.70x = 125,384,355,768.27
  5. Step 5: Solve for x
    x = 125,384,355,768.27/487,145.70
  6. Step 6: Final answer
    x = 257,385.74

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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.