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Finding the Fourth Proportional to 261,054.09, 360,246.15 and 153,630

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Solution

The fourth proportional to 261,054.09, 360,246.15 and 153,630 is: 212,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,054.09 : 360,246.15 = 153,630 : x
  2. Step 2: Convert to fraction form
    261,054.09/360,246.15 = 153,630/x
  3. Step 3: Cross multiply
    261,054.09x = 360,246.15 × 153,630
  4. Step 4: Simplify right side
    261,054.09x = 55,344,616,024.50
  5. Step 5: Solve for x
    x = 55,344,616,024.50/261,054.09
  6. Step 6: Final answer
    x = 212,004.40

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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.