Home / 386,545.13-533,490.59-235,729.61

Finding the Fourth Proportional to 386,545.13, 533,490.59 and 235,729.61

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Solution

The fourth proportional to 386,545.13, 533,490.59 and 235,729.61 is: 325,342.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,545.13 : 533,490.59 = 235,729.61 : x
  2. Step 2: Convert to fraction form
    386,545.13/533,490.59 = 235,729.61/x
  3. Step 3: Cross multiply
    386,545.13x = 533,490.59 × 235,729.61
  4. Step 4: Simplify right side
    386,545.13x = 125,759,526,641.24
  5. Step 5: Solve for x
    x = 125,759,526,641.24/386,545.13
  6. Step 6: Final answer
    x = 325,342.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.