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Finding the Fourth Proportional to 515,061.28, 772,702.64 and 173,538.65

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Solution

The fourth proportional to 515,061.28, 772,702.64 and 173,538.65 is: 260,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,061.28 : 772,702.64 = 173,538.65 : x
  2. Step 2: Convert to fraction form
    515,061.28/772,702.64 = 173,538.65/x
  3. Step 3: Cross multiply
    515,061.28x = 772,702.64 × 173,538.65
  4. Step 4: Simplify right side
    515,061.28x = 134,093,774,711.87
  5. Step 5: Solve for x
    x = 134,093,774,711.87/515,061.28
  6. Step 6: Final answer
    x = 260,345.28

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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.