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Finding the Fourth Proportional to 225,099.16, 310,602.36 and 129,587.40

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Solution

The fourth proportional to 225,099.16, 310,602.36 and 129,587.40 is: 178,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,099.16 : 310,602.36 = 129,587.40 : x
  2. Step 2: Convert to fraction form
    225,099.16/310,602.36 = 129,587.40/x
  3. Step 3: Cross multiply
    225,099.16x = 310,602.36 × 129,587.40
  4. Step 4: Simplify right side
    225,099.16x = 40,250,152,266.26
  5. Step 5: Solve for x
    x = 40,250,152,266.26/225,099.16
  6. Step 6: Final answer
    x = 178,810.76

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1.5x scale

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.