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Finding the Fourth Proportional to 371,032.25, 512,024.67 and 209,883.92

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Solution

The fourth proportional to 371,032.25, 512,024.67 and 209,883.92 is: 289,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,032.25 : 512,024.67 = 209,883.92 : x
  2. Step 2: Convert to fraction form
    371,032.25/512,024.67 = 209,883.92/x
  3. Step 3: Cross multiply
    371,032.25x = 512,024.67 × 209,883.92
  4. Step 4: Simplify right side
    371,032.25x = 107,465,742,316.18
  5. Step 5: Solve for x
    x = 107,465,742,316.18/371,032.25
  6. Step 6: Final answer
    x = 289,639.90

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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.