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Finding the Fourth Proportional to 191,400.98, 286,908.48 and 120,374.38

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Solution

The fourth proportional to 191,400.98, 286,908.48 and 120,374.38 is: 180,440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,400.98 : 286,908.48 = 120,374.38 : x
  2. Step 2: Convert to fraction form
    191,400.98/286,908.48 = 120,374.38/x
  3. Step 3: Cross multiply
    191,400.98x = 286,908.48 × 120,374.38
  4. Step 4: Simplify right side
    191,400.98x = 34,536,429,679.47
  5. Step 5: Solve for x
    x = 34,536,429,679.47/191,400.98
  6. Step 6: Final answer
    x = 180,440.19

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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.