Home / 208,275.08-287,419.20-112,781.48

Finding the Fourth Proportional to 208,275.08, 287,419.20 and 112,781.48

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Solution

The fourth proportional to 208,275.08, 287,419.20 and 112,781.48 is: 155,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,275.08 : 287,419.20 = 112,781.48 : x
  2. Step 2: Convert to fraction form
    208,275.08/287,419.20 = 112,781.48/x
  3. Step 3: Cross multiply
    208,275.08x = 287,419.20 × 112,781.48
  4. Step 4: Simplify right side
    208,275.08x = 32,415,562,756.42
  5. Step 5: Solve for x
    x = 32,415,562,756.42/208,275.08
  6. Step 6: Final answer
    x = 155,638.22

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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.