Home / 345,477.16-518,111.10-120,795.70

Finding the Fourth Proportional to 345,477.16, 518,111.10 and 120,795.70

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Solution

The fourth proportional to 345,477.16, 518,111.10 and 120,795.70 is: 181,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,477.16 : 518,111.10 = 120,795.70 : x
  2. Step 2: Convert to fraction form
    345,477.16/518,111.10 = 120,795.70/x
  3. Step 3: Cross multiply
    345,477.16x = 518,111.10 × 120,795.70
  4. Step 4: Simplify right side
    345,477.16x = 62,585,593,002.27
  5. Step 5: Solve for x
    x = 62,585,593,002.27/345,477.16
  6. Step 6: Final answer
    x = 181,156.96

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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.