Home / 287,684,763.10-431,569,135.05-93,563,143.90

Finding the Fourth Proportional to 287,684,763.10, 431,569,135.05 and 93,563,143.90

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Solution

The fourth proportional to 287,684,763.10, 431,569,135.05 and 93,563,143.90 is: 140,358,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,684,763.10 : 431,569,135.05 = 93,563,143.90 : x
  2. Step 2: Convert to fraction form
    287,684,763.10/431,569,135.05 = 93,563,143.90/x
  3. Step 3: Cross multiply
    287,684,763.10x = 431,569,135.05 × 93,563,143.90
  4. Step 4: Simplify right side
    287,684,763.10x = 40,378,965,085,481,688
  5. Step 5: Solve for x
    x = 40,378,965,085,481,688/287,684,763.10
  6. Step 6: Final answer
    x = 140,358,372.30

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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.