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Finding the Fourth Proportional to 310,535.20, 465,802.80 and 210,151.90

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Solution

The fourth proportional to 310,535.20, 465,802.80 and 210,151.90 is: 315,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,535.20 : 465,802.80 = 210,151.90 : x
  2. Step 2: Convert to fraction form
    310,535.20/465,802.80 = 210,151.90/x
  3. Step 3: Cross multiply
    310,535.20x = 465,802.80 × 210,151.90
  4. Step 4: Simplify right side
    310,535.20x = 97,889,343,445.32
  5. Step 5: Solve for x
    x = 97,889,343,445.32/310,535.20
  6. Step 6: Final answer
    x = 315,227.85

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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.