Home / 385,349,085.21-577,894,082.90-139,654,278.55

Finding the Fourth Proportional to 385,349,085.21, 577,894,082.90 and 139,654,278.55

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Solution

The fourth proportional to 385,349,085.21, 577,894,082.90 and 139,654,278.55 is: 209,434,469.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,349,085.21 : 577,894,082.90 = 139,654,278.55 : x
  2. Step 2: Convert to fraction form
    385,349,085.21/577,894,082.90 = 139,654,278.55/x
  3. Step 3: Cross multiply
    385,349,085.21x = 577,894,082.90 × 139,654,278.55
  4. Step 4: Simplify right side
    385,349,085.21x = 80,705,381,223,271,792
  5. Step 5: Solve for x
    x = 80,705,381,223,271,792/385,349,085.21
  6. Step 6: Final answer
    x = 209,434,469.47

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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.