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Finding the Fourth Proportional to 553,538.60, 830,064.90 and 253,919.60

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Solution

The fourth proportional to 553,538.60, 830,064.90 and 253,919.60 is: 380,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,538.60 : 830,064.90 = 253,919.60 : x
  2. Step 2: Convert to fraction form
    553,538.60/830,064.90 = 253,919.60/x
  3. Step 3: Cross multiply
    553,538.60x = 830,064.90 × 253,919.60
  4. Step 4: Simplify right side
    553,538.60x = 210,769,747,382.04
  5. Step 5: Solve for x
    x = 210,769,747,382.04/553,538.60
  6. Step 6: Final answer
    x = 380,767.93

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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.