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Finding the Fourth Proportional to 265,615.04, 398,421.76 and 83,259.76

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Solution

The fourth proportional to 265,615.04, 398,421.76 and 83,259.76 is: 124,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,615.04 : 398,421.76 = 83,259.76 : x
  2. Step 2: Convert to fraction form
    265,615.04/398,421.76 = 83,259.76/x
  3. Step 3: Cross multiply
    265,615.04x = 398,421.76 × 83,259.76
  4. Step 4: Simplify right side
    265,615.04x = 33,172,500,116.38
  5. Step 5: Solve for x
    x = 33,172,500,116.38/265,615.04
  6. Step 6: Final answer
    x = 124,889.39

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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.