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Finding the Fourth Proportional to 313,672.72, 432,905.52 and 186,349.36

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Solution

The fourth proportional to 313,672.72, 432,905.52 and 186,349.36 is: 257,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,672.72 : 432,905.52 = 186,349.36 : x
  2. Step 2: Convert to fraction form
    313,672.72/432,905.52 = 186,349.36/x
  3. Step 3: Cross multiply
    313,672.72x = 432,905.52 × 186,349.36
  4. Step 4: Simplify right side
    313,672.72x = 80,671,666,592.47
  5. Step 5: Solve for x
    x = 80,671,666,592.47/313,672.72
  6. Step 6: Final answer
    x = 257,184.20

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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.