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Finding the Fourth Proportional to 225,100.16, 310,603.74 and 129,588.40

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Solution

The fourth proportional to 225,100.16, 310,603.74 and 129,588.40 is: 178,812.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,100.16 : 310,603.74 = 129,588.40 : x
  2. Step 2: Convert to fraction form
    225,100.16/310,603.74 = 129,588.40/x
  3. Step 3: Cross multiply
    225,100.16x = 310,603.74 × 129,588.40
  4. Step 4: Simplify right side
    225,100.16x = 40,250,641,700.62
  5. Step 5: Solve for x
    x = 40,250,641,700.62/225,100.16
  6. Step 6: Final answer
    x = 178,812.14

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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.