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Finding the Fourth Proportional to 478,990.16, 718,559.04 and 163,373.32

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Solution

The fourth proportional to 478,990.16, 718,559.04 and 163,373.32 is: 245,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,990.16 : 718,559.04 = 163,373.32 : x
  2. Step 2: Convert to fraction form
    478,990.16/718,559.04 = 163,373.32/x
  3. Step 3: Cross multiply
    478,990.16x = 718,559.04 × 163,373.32
  4. Step 4: Simplify right side
    478,990.16x = 117,393,375,980.81
  5. Step 5: Solve for x
    x = 117,393,375,980.81/478,990.16
  6. Step 6: Final answer
    x = 245,085.15

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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.