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Finding the Fourth Proportional to 480,484.32, 721,161.21 and 256,034.40

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Solution

The fourth proportional to 480,484.32, 721,161.21 and 256,034.40 is: 384,283.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,484.32 : 721,161.21 = 256,034.40 : x
  2. Step 2: Convert to fraction form
    480,484.32/721,161.21 = 256,034.40/x
  3. Step 3: Cross multiply
    480,484.32x = 721,161.21 × 256,034.40
  4. Step 4: Simplify right side
    480,484.32x = 184,642,077,705.62
  5. Step 5: Solve for x
    x = 184,642,077,705.62/480,484.32
  6. Step 6: Final answer
    x = 384,283.25

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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.