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Finding the Fourth Proportional to 315,562.60, 473,343.90 and 191,146.60

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Solution

The fourth proportional to 315,562.60, 473,343.90 and 191,146.60 is: 286,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,562.60 : 473,343.90 = 191,146.60 : x
  2. Step 2: Convert to fraction form
    315,562.60/473,343.90 = 191,146.60/x
  3. Step 3: Cross multiply
    315,562.60x = 473,343.90 × 191,146.60
  4. Step 4: Simplify right side
    315,562.60x = 90,478,077,115.74
  5. Step 5: Solve for x
    x = 90,478,077,115.74/315,562.60
  6. Step 6: Final answer
    x = 286,719.90

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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.