Home / 287,778,586.80-431,573,401.80-106,002,145.20

Finding the Fourth Proportional to 287,778,586.80, 431,573,401.80 and 106,002,145.20

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Solution

The fourth proportional to 287,778,586.80, 431,573,401.80 and 106,002,145.20 is: 158,968,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,778,586.80 : 431,573,401.80 = 106,002,145.20 : x
  2. Step 2: Convert to fraction form
    287,778,586.80/431,573,401.80 = 106,002,145.20/x
  3. Step 3: Cross multiply
    287,778,586.80x = 431,573,401.80 × 106,002,145.20
  4. Step 4: Simplify right side
    287,778,586.80x = 45,747,706,402,061,544
  5. Step 5: Solve for x
    x = 45,747,706,402,061,544/287,778,586.80
  6. Step 6: Final answer
    x = 158,968,417.04

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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.