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Finding the Fourth Proportional to 313,128.70, 432,117.65 and 169,888.77

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Solution

The fourth proportional to 313,128.70, 432,117.65 and 169,888.77 is: 234,446.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,128.70 : 432,117.65 = 169,888.77 : x
  2. Step 2: Convert to fraction form
    313,128.70/432,117.65 = 169,888.77/x
  3. Step 3: Cross multiply
    313,128.70x = 432,117.65 × 169,888.77
  4. Step 4: Simplify right side
    313,128.70x = 73,411,936,053.79
  5. Step 5: Solve for x
    x = 73,411,936,053.79/313,128.70
  6. Step 6: Final answer
    x = 234,446.53

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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.