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Finding the Fourth Proportional to 216,870.26, 299,312.37 and 124,971.66

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Solution

The fourth proportional to 216,870.26, 299,312.37 and 124,971.66 is: 172,479.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,870.26 : 299,312.37 = 124,971.66 : x
  2. Step 2: Convert to fraction form
    216,870.26/299,312.37 = 124,971.66/x
  3. Step 3: Cross multiply
    216,870.26x = 299,312.37 × 124,971.66
  4. Step 4: Simplify right side
    216,870.26x = 37,405,563,737.43
  5. Step 5: Solve for x
    x = 37,405,563,737.43/216,870.26
  6. Step 6: Final answer
    x = 172,479.00

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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.