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Finding the Fourth Proportional to 402,703.60, 603,364.20 and 191,887.60

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Solution

The fourth proportional to 402,703.60, 603,364.20 and 191,887.60 is: 287,502.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,703.60 : 603,364.20 = 191,887.60 : x
  2. Step 2: Convert to fraction form
    402,703.60/603,364.20 = 191,887.60/x
  3. Step 3: Cross multiply
    402,703.60x = 603,364.20 × 191,887.60
  4. Step 4: Simplify right side
    402,703.60x = 115,778,108,263.92
  5. Step 5: Solve for x
    x = 115,778,108,263.92/402,703.60
  6. Step 6: Final answer
    x = 287,502.04

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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.