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Finding the Fourth Proportional to 245,146.85, 366,929.31 and 126,655.19

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Solution

The fourth proportional to 245,146.85, 366,929.31 and 126,655.19 is: 189,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,146.85 : 366,929.31 = 126,655.19 : x
  2. Step 2: Convert to fraction form
    245,146.85/366,929.31 = 126,655.19/x
  3. Step 3: Cross multiply
    245,146.85x = 366,929.31 × 126,655.19
  4. Step 4: Simplify right side
    245,146.85x = 46,473,501,916.99
  5. Step 5: Solve for x
    x = 46,473,501,916.99/245,146.85
  6. Step 6: Final answer
    x = 189,574.13

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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.