Home / 217,122.86-299,543.28-135,403.04

Finding the Fourth Proportional to 217,122.86, 299,543.28 and 135,403.04

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Solution

The fourth proportional to 217,122.86, 299,543.28 and 135,403.04 is: 186,802.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,122.86 : 299,543.28 = 135,403.04 : x
  2. Step 2: Convert to fraction form
    217,122.86/299,543.28 = 135,403.04/x
  3. Step 3: Cross multiply
    217,122.86x = 299,543.28 × 135,403.04
  4. Step 4: Simplify right side
    217,122.86x = 40,559,070,723.57
  5. Step 5: Solve for x
    x = 40,559,070,723.57/217,122.86
  6. Step 6: Final answer
    x = 186,802.40

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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.