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Finding the Fourth Proportional to 313,875.49, 433,143.07 and 170,639.11

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Solution

The fourth proportional to 313,875.49, 433,143.07 and 170,639.11 is: 235,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,875.49 : 433,143.07 = 170,639.11 : x
  2. Step 2: Convert to fraction form
    313,875.49/433,143.07 = 170,639.11/x
  3. Step 3: Cross multiply
    313,875.49x = 433,143.07 × 170,639.11
  4. Step 4: Simplify right side
    313,875.49x = 73,911,147,967.47
  5. Step 5: Solve for x
    x = 73,911,147,967.47/313,875.49
  6. Step 6: Final answer
    x = 235,479.20

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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.