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Finding the Fourth Proportional to 325,266.90, 487,572.30 and 147,901.20

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Solution

The fourth proportional to 325,266.90, 487,572.30 and 147,901.20 is: 221,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,266.90 : 487,572.30 = 147,901.20 : x
  2. Step 2: Convert to fraction form
    325,266.90/487,572.30 = 147,901.20/x
  3. Step 3: Cross multiply
    325,266.90x = 487,572.30 × 147,901.20
  4. Step 4: Simplify right side
    325,266.90x = 72,112,528,256.76
  5. Step 5: Solve for x
    x = 72,112,528,256.76/325,266.90
  6. Step 6: Final answer
    x = 221,702.63

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1.5x scale

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.