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Finding the Fourth Proportional to 261,058.55, 360,242.64 and 153,605.77

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Solution

The fourth proportional to 261,058.55, 360,242.64 and 153,605.77 is: 211,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,058.55 : 360,242.64 = 153,605.77 : x
  2. Step 2: Convert to fraction form
    261,058.55/360,242.64 = 153,605.77/x
  3. Step 3: Cross multiply
    261,058.55x = 360,242.64 × 153,605.77
  4. Step 4: Simplify right side
    261,058.55x = 55,335,347,203.43
  5. Step 5: Solve for x
    x = 55,335,347,203.43/261,058.55
  6. Step 6: Final answer
    x = 211,965.28

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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.