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Finding the Fourth Proportional to 532,371.32, 734,661.20 and 290,642.21

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Solution

The fourth proportional to 532,371.32, 734,661.20 and 290,642.21 is: 401,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,371.32 : 734,661.20 = 290,642.21 : x
  2. Step 2: Convert to fraction form
    532,371.32/734,661.20 = 290,642.21/x
  3. Step 3: Cross multiply
    532,371.32x = 734,661.20 × 290,642.21
  4. Step 4: Simplify right side
    532,371.32x = 213,523,553,316.04
  5. Step 5: Solve for x
    x = 213,523,553,316.04/532,371.32
  6. Step 6: Final answer
    x = 401,080.12

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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.