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Finding the Fourth Proportional to 518,701.51, 715,866.02 and 304,023.16

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Solution

The fourth proportional to 518,701.51, 715,866.02 and 304,023.16 is: 419,585.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,701.51 : 715,866.02 = 304,023.16 : x
  2. Step 2: Convert to fraction form
    518,701.51/715,866.02 = 304,023.16/x
  3. Step 3: Cross multiply
    518,701.51x = 715,866.02 × 304,023.16
  4. Step 4: Simplify right side
    518,701.51x = 217,639,849,537.02
  5. Step 5: Solve for x
    x = 217,639,849,537.02/518,701.51
  6. Step 6: Final answer
    x = 419,585.92

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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.