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Finding the Fourth Proportional to 285,416.55, 427,543.52 and 135,201.51

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Solution

The fourth proportional to 285,416.55, 427,543.52 and 135,201.51 is: 202,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,416.55 : 427,543.52 = 135,201.51 : x
  2. Step 2: Convert to fraction form
    285,416.55/427,543.52 = 135,201.51/x
  3. Step 3: Cross multiply
    285,416.55x = 427,543.52 × 135,201.51
  4. Step 4: Simplify right side
    285,416.55x = 57,804,528,818.71
  5. Step 5: Solve for x
    x = 57,804,528,818.71/285,416.55
  6. Step 6: Final answer
    x = 202,526.90

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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.