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Finding the Fourth Proportional to 315,030.40, 472,545.60 and 215,497.60

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Solution

The fourth proportional to 315,030.40, 472,545.60 and 215,497.60 is: 323,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,030.40 : 472,545.60 = 215,497.60 : x
  2. Step 2: Convert to fraction form
    315,030.40/472,545.60 = 215,497.60/x
  3. Step 3: Cross multiply
    315,030.40x = 472,545.60 × 215,497.60
  4. Step 4: Simplify right side
    315,030.40x = 101,832,442,690.56
  5. Step 5: Solve for x
    x = 101,832,442,690.56/315,030.40
  6. Step 6: Final answer
    x = 323,246.40

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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.