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Finding the Fourth Proportional to 478,158.62, 716,699.68 and 208,513.67

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Solution

The fourth proportional to 478,158.62, 716,699.68 and 208,513.67 is: 312,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,158.62 : 716,699.68 = 208,513.67 : x
  2. Step 2: Convert to fraction form
    478,158.62/716,699.68 = 208,513.67/x
  3. Step 3: Cross multiply
    478,158.62x = 716,699.68 × 208,513.67
  4. Step 4: Simplify right side
    478,158.62x = 149,441,680,564.63
  5. Step 5: Solve for x
    x = 149,441,680,564.63/478,158.62
  6. Step 6: Final answer
    x = 312,535.79

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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.