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Finding the Fourth Proportional to 401,447.40, 602,171.10 and 105,959.40

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Solution

The fourth proportional to 401,447.40, 602,171.10 and 105,959.40 is: 158,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,447.40 : 602,171.10 = 105,959.40 : x
  2. Step 2: Convert to fraction form
    401,447.40/602,171.10 = 105,959.40/x
  3. Step 3: Cross multiply
    401,447.40x = 602,171.10 × 105,959.40
  4. Step 4: Simplify right side
    401,447.40x = 63,805,688,453.34
  5. Step 5: Solve for x
    x = 63,805,688,453.34/401,447.40
  6. Step 6: Final answer
    x = 158,939.10

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1.5x scale

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.