Home / 261,419.04-392,165.28-103,663.44

Finding the Fourth Proportional to 261,419.04, 392,165.28 and 103,663.44

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Solution

The fourth proportional to 261,419.04, 392,165.28 and 103,663.44 is: 155,509.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,419.04 : 392,165.28 = 103,663.44 : x
  2. Step 2: Convert to fraction form
    261,419.04/392,165.28 = 103,663.44/x
  3. Step 3: Cross multiply
    261,419.04x = 392,165.28 × 103,663.44
  4. Step 4: Simplify right side
    261,419.04x = 40,653,201,973.36
  5. Step 5: Solve for x
    x = 40,653,201,973.36/261,419.04
  6. Step 6: Final answer
    x = 155,509.72

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1.5x scale

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.