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Finding the Fourth Proportional to 307,386.60, 424,185.06 and 171,424.68

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Solution

The fourth proportional to 307,386.60, 424,185.06 and 171,424.68 is: 236,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,386.60 : 424,185.06 = 171,424.68 : x
  2. Step 2: Convert to fraction form
    307,386.60/424,185.06 = 171,424.68/x
  3. Step 3: Cross multiply
    307,386.60x = 424,185.06 × 171,424.68
  4. Step 4: Simplify right side
    307,386.60x = 72,715,788,171.28
  5. Step 5: Solve for x
    x = 72,715,788,171.28/307,386.60
  6. Step 6: Final answer
    x = 236,561.35

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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.