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Finding the Fourth Proportional to 386,036.48, 579,695.88 and 260,484.32

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Solution

The fourth proportional to 386,036.48, 579,695.88 and 260,484.32 is: 391,159.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,036.48 : 579,695.88 = 260,484.32 : x
  2. Step 2: Convert to fraction form
    386,036.48/579,695.88 = 260,484.32/x
  3. Step 3: Cross multiply
    386,036.48x = 579,695.88 × 260,484.32
  4. Step 4: Simplify right side
    386,036.48x = 151,001,687,108.60
  5. Step 5: Solve for x
    x = 151,001,687,108.60/386,036.48
  6. Step 6: Final answer
    x = 391,159.11

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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.