Home / 390,184.89-538,498.86-220,429.95

Finding the Fourth Proportional to 390,184.89, 538,498.86 and 220,429.95

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Solution

The fourth proportional to 390,184.89, 538,498.86 and 220,429.95 is: 304,218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,184.89 : 538,498.86 = 220,429.95 : x
  2. Step 2: Convert to fraction form
    390,184.89/538,498.86 = 220,429.95/x
  3. Step 3: Cross multiply
    390,184.89x = 538,498.86 × 220,429.95
  4. Step 4: Simplify right side
    390,184.89x = 118,701,276,784.86
  5. Step 5: Solve for x
    x = 118,701,276,784.86/390,184.89
  6. Step 6: Final answer
    x = 304,218.03

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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.