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Finding the Fourth Proportional to 282,745.75, 390,189.95 and 161,888.89

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Solution

The fourth proportional to 282,745.75, 390,189.95 and 161,888.89 is: 223,407.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,745.75 : 390,189.95 = 161,888.89 : x
  2. Step 2: Convert to fraction form
    282,745.75/390,189.95 = 161,888.89/x
  3. Step 3: Cross multiply
    282,745.75x = 390,189.95 × 161,888.89
  4. Step 4: Simplify right side
    282,745.75x = 63,167,417,085.21
  5. Step 5: Solve for x
    x = 63,167,417,085.21/282,745.75
  6. Step 6: Final answer
    x = 223,407.13

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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.