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Finding the Fourth Proportional to 223,014.68, 307,335.42 and 218,915.40

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Solution

The fourth proportional to 223,014.68, 307,335.42 and 218,915.40 is: 301,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,014.68 : 307,335.42 = 218,915.40 : x
  2. Step 2: Convert to fraction form
    223,014.68/307,335.42 = 218,915.40/x
  3. Step 3: Cross multiply
    223,014.68x = 307,335.42 × 218,915.40
  4. Step 4: Simplify right side
    223,014.68x = 67,280,456,403.47
  5. Step 5: Solve for x
    x = 67,280,456,403.47/223,014.68
  6. Step 6: Final answer
    x = 301,686.22

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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.