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Finding the Fourth Proportional to 371,403.80, 512,532.28 and 210,254.72

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Solution

The fourth proportional to 371,403.80, 512,532.28 and 210,254.72 is: 290,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,403.80 : 512,532.28 = 210,254.72 : x
  2. Step 2: Convert to fraction form
    371,403.80/512,532.28 = 210,254.72/x
  3. Step 3: Cross multiply
    371,403.80x = 512,532.28 × 210,254.72
  4. Step 4: Simplify right side
    371,403.80x = 107,762,331,022.36
  5. Step 5: Solve for x
    x = 107,762,331,022.36/371,403.80
  6. Step 6: Final answer
    x = 290,148.70

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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.