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Finding the Fourth Proportional to 390,833.37, 586,292.53 and 124,531.29

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Solution

The fourth proportional to 390,833.37, 586,292.53 and 124,531.29 is: 186,810.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,833.37 : 586,292.53 = 124,531.29 : x
  2. Step 2: Convert to fraction form
    390,833.37/586,292.53 = 124,531.29/x
  3. Step 3: Cross multiply
    390,833.37x = 586,292.53 × 124,531.29
  4. Step 4: Simplify right side
    390,833.37x = 73,011,762,146.80
  5. Step 5: Solve for x
    x = 73,011,762,146.80/390,833.37
  6. Step 6: Final answer
    x = 186,810.46

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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.