Home / 291,440,012.20-437,663,903.10-155,391,116.20

Finding the Fourth Proportional to 291,440,012.20, 437,663,903.10 and 155,391,116.20

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Solution

The fourth proportional to 291,440,012.20, 437,663,903.10 and 155,391,116.20 is: 233,355,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,440,012.20 : 437,663,903.10 = 155,391,116.20 : x
  2. Step 2: Convert to fraction form
    291,440,012.20/437,663,903.10 = 155,391,116.20/x
  3. Step 3: Cross multiply
    291,440,012.20x = 437,663,903.10 × 155,391,116.20
  4. Step 4: Simplify right side
    291,440,012.20x = 68,009,082,423,157,640
  5. Step 5: Solve for x
    x = 68,009,082,423,157,640/291,440,012.20
  6. Step 6: Final answer
    x = 233,355,337.55

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1.5x scale

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.