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Finding the Fourth Proportional to 529,178.58, 730,271.53 and 287,465.87

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Solution

The fourth proportional to 529,178.58, 730,271.53 and 287,465.87 is: 396,705.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,178.58 : 730,271.53 = 287,465.87 : x
  2. Step 2: Convert to fraction form
    529,178.58/730,271.53 = 287,465.87/x
  3. Step 3: Cross multiply
    529,178.58x = 730,271.53 × 287,465.87
  4. Step 4: Simplify right side
    529,178.58x = 209,928,142,892.69
  5. Step 5: Solve for x
    x = 209,928,142,892.69/529,178.58
  6. Step 6: Final answer
    x = 396,705.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.