Home / 390,114.48-538,339.32-220,373.04

Finding the Fourth Proportional to 390,114.48, 538,339.32 and 220,373.04

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Solution

The fourth proportional to 390,114.48, 538,339.32 and 220,373.04 is: 304,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,114.48 : 538,339.32 = 220,373.04 : x
  2. Step 2: Convert to fraction form
    390,114.48/538,339.32 = 220,373.04/x
  3. Step 3: Cross multiply
    390,114.48x = 538,339.32 × 220,373.04
  4. Step 4: Simplify right side
    390,114.48x = 118,635,472,499.93
  5. Step 5: Solve for x
    x = 118,635,472,499.93/390,114.48
  6. Step 6: Final answer
    x = 304,104.25

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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.