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Finding the Fourth Proportional to 371,479.32, 512,627.40 and 210,302.28

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Solution

The fourth proportional to 371,479.32, 512,627.40 and 210,302.28 is: 290,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,479.32 : 512,627.40 = 210,302.28 : x
  2. Step 2: Convert to fraction form
    371,479.32/512,627.40 = 210,302.28/x
  3. Step 3: Cross multiply
    371,479.32x = 512,627.40 × 210,302.28
  4. Step 4: Simplify right side
    371,479.32x = 107,806,711,010.47
  5. Step 5: Solve for x
    x = 107,806,711,010.47/371,479.32
  6. Step 6: Final answer
    x = 290,209.19

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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.