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Finding the Fourth Proportional to 230,363.90, 317,903.76 and 128,395.93

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Solution

The fourth proportional to 230,363.90, 317,903.76 and 128,395.93 is: 177,187.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,363.90 : 317,903.76 = 128,395.93 : x
  2. Step 2: Convert to fraction form
    230,363.90/317,903.76 = 128,395.93/x
  3. Step 3: Cross multiply
    230,363.90x = 317,903.76 × 128,395.93
  4. Step 4: Simplify right side
    230,363.90x = 40,817,548,120.94
  5. Step 5: Solve for x
    x = 40,817,548,120.94/230,363.90
  6. Step 6: Final answer
    x = 177,187.26

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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.