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Finding the Fourth Proportional to 456,656.80, 684,985.20 and 161,130.40

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Solution

The fourth proportional to 456,656.80, 684,985.20 and 161,130.40 is: 241,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,656.80 : 684,985.20 = 161,130.40 : x
  2. Step 2: Convert to fraction form
    456,656.80/684,985.20 = 161,130.40/x
  3. Step 3: Cross multiply
    456,656.80x = 684,985.20 × 161,130.40
  4. Step 4: Simplify right side
    456,656.80x = 110,371,939,270.08
  5. Step 5: Solve for x
    x = 110,371,939,270.08/456,656.80
  6. Step 6: Final answer
    x = 241,695.60

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Similar ratio
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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.