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Finding the Fourth Proportional to 245,713.63, 368,570.02 and 77,248.68

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Solution

The fourth proportional to 245,713.63, 368,570.02 and 77,248.68 is: 115,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,713.63 : 368,570.02 = 77,248.68 : x
  2. Step 2: Convert to fraction form
    245,713.63/368,570.02 = 77,248.68/x
  3. Step 3: Cross multiply
    245,713.63x = 368,570.02 × 77,248.68
  4. Step 4: Simplify right side
    245,713.63x = 28,471,547,532.57
  5. Step 5: Solve for x
    x = 28,471,547,532.57/245,713.63
  6. Step 6: Final answer
    x = 115,872.89

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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.