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Finding the Fourth Proportional to 520,122.40, 780,261.16 and 160,263.16

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Solution

The fourth proportional to 520,122.40, 780,261.16 and 160,263.16 is: 240,418.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,122.40 : 780,261.16 = 160,263.16 : x
  2. Step 2: Convert to fraction form
    520,122.40/780,261.16 = 160,263.16/x
  3. Step 3: Cross multiply
    520,122.40x = 780,261.16 × 160,263.16
  4. Step 4: Simplify right side
    520,122.40x = 125,047,119,126.87
  5. Step 5: Solve for x
    x = 125,047,119,126.87/520,122.40
  6. Step 6: Final answer
    x = 240,418.64

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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.