Home / 347,285,985.80-520,532,722.92-139,891,689.08

Finding the Fourth Proportional to 347,285,985.80, 520,532,722.92 and 139,891,689.08

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Solution

The fourth proportional to 347,285,985.80, 520,532,722.92 and 139,891,689.08 is: 209,677,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,285,985.80 : 520,532,722.92 = 139,891,689.08 : x
  2. Step 2: Convert to fraction form
    347,285,985.80/520,532,722.92 = 139,891,689.08/x
  3. Step 3: Cross multiply
    347,285,985.80x = 520,532,722.92 × 139,891,689.08
  4. Step 4: Simplify right side
    347,285,985.80x = 72,818,201,830,690,432
  5. Step 5: Solve for x
    x = 72,818,201,830,690,432/347,285,985.80
  6. Step 6: Final answer
    x = 209,677,916.21

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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.