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Finding the Fourth Proportional to 478,641.42, 718,047.51 and 158,812.47

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Solution

The fourth proportional to 478,641.42, 718,047.51 and 158,812.47 is: 238,247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,641.42 : 718,047.51 = 158,812.47 : x
  2. Step 2: Convert to fraction form
    478,641.42/718,047.51 = 158,812.47/x
  3. Step 3: Cross multiply
    478,641.42x = 718,047.51 × 158,812.47
  4. Step 4: Simplify right side
    478,641.42x = 114,034,898,640.45
  5. Step 5: Solve for x
    x = 114,034,898,640.45/478,641.42
  6. Step 6: Final answer
    x = 238,247.03

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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.