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Finding the Fourth Proportional to 514,920.30, 772,368.30 and 140,943.30

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Solution

The fourth proportional to 514,920.30, 772,368.30 and 140,943.30 is: 211,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,920.30 : 772,368.30 = 140,943.30 : x
  2. Step 2: Convert to fraction form
    514,920.30/772,368.30 = 140,943.30/x
  3. Step 3: Cross multiply
    514,920.30x = 772,368.30 × 140,943.30
  4. Step 4: Simplify right side
    514,920.30x = 108,860,137,017.39
  5. Step 5: Solve for x
    x = 108,860,137,017.39/514,920.30
  6. Step 6: Final answer
    x = 211,411.62

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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.