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Finding the Fourth Proportional to 390,746.68, 586,113.62 and 124,503.60

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Solution

The fourth proportional to 390,746.68, 586,113.62 and 124,503.60 is: 186,753.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,746.68 : 586,113.62 = 124,503.60 : x
  2. Step 2: Convert to fraction form
    390,746.68/586,113.62 = 124,503.60/x
  3. Step 3: Cross multiply
    390,746.68x = 586,113.62 × 124,503.60
  4. Step 4: Simplify right side
    390,746.68x = 72,973,255,699.03
  5. Step 5: Solve for x
    x = 72,973,255,699.03/390,746.68
  6. Step 6: Final answer
    x = 186,753.36

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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.