Home / 435,743.40-653,129.10-169,415.40

Finding the Fourth Proportional to 435,743.40, 653,129.10 and 169,415.40

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Solution

The fourth proportional to 435,743.40, 653,129.10 and 169,415.40 is: 253,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,743.40 : 653,129.10 = 169,415.40 : x
  2. Step 2: Convert to fraction form
    435,743.40/653,129.10 = 169,415.40/x
  3. Step 3: Cross multiply
    435,743.40x = 653,129.10 × 169,415.40
  4. Step 4: Simplify right side
    435,743.40x = 110,650,127,728.14
  5. Step 5: Solve for x
    x = 110,650,127,728.14/435,743.40
  6. Step 6: Final answer
    x = 253,934.15

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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.