Home / 221,385.04-305,502.24-130,770.36

Finding the Fourth Proportional to 221,385.04, 305,502.24 and 130,770.36

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Solution

The fourth proportional to 221,385.04, 305,502.24 and 130,770.36 is: 180,457.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,385.04 : 305,502.24 = 130,770.36 : x
  2. Step 2: Convert to fraction form
    221,385.04/305,502.24 = 130,770.36/x
  3. Step 3: Cross multiply
    221,385.04x = 305,502.24 × 130,770.36
  4. Step 4: Simplify right side
    221,385.04x = 39,950,637,905.61
  5. Step 5: Solve for x
    x = 39,950,637,905.61/221,385.04
  6. Step 6: Final answer
    x = 180,457.71

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1.5x scale

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.