Home / 345,643.20-518,464.80-177,681.60

Finding the Fourth Proportional to 345,643.20, 518,464.80 and 177,681.60

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Solution

The fourth proportional to 345,643.20, 518,464.80 and 177,681.60 is: 266,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,643.20 : 518,464.80 = 177,681.60 : x
  2. Step 2: Convert to fraction form
    345,643.20/518,464.80 = 177,681.60/x
  3. Step 3: Cross multiply
    345,643.20x = 518,464.80 × 177,681.60
  4. Step 4: Simplify right side
    345,643.20x = 92,121,655,207.68
  5. Step 5: Solve for x
    x = 92,121,655,207.68/345,643.20
  6. Step 6: Final answer
    x = 266,522.40

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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.