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Finding the Fourth Proportional to 218,681.60, 301,809.28 and 123,206.72

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Solution

The fourth proportional to 218,681.60, 301,809.28 and 123,206.72 is: 170,041.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,681.60 : 301,809.28 = 123,206.72 : x
  2. Step 2: Convert to fraction form
    218,681.60/301,809.28 = 123,206.72/x
  3. Step 3: Cross multiply
    218,681.60x = 301,809.28 × 123,206.72
  4. Step 4: Simplify right side
    218,681.60x = 37,184,931,454.36
  5. Step 5: Solve for x
    x = 37,184,931,454.36/218,681.60
  6. Step 6: Final answer
    x = 170,041.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.