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Finding the Fourth Proportional to 354,427.77, 489,518.74 and 258,062.57

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Solution

The fourth proportional to 354,427.77, 489,518.74 and 258,062.57 is: 356,423.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,427.77 : 489,518.74 = 258,062.57 : x
  2. Step 2: Convert to fraction form
    354,427.77/489,518.74 = 258,062.57/x
  3. Step 3: Cross multiply
    354,427.77x = 489,518.74 × 258,062.57
  4. Step 4: Simplify right side
    354,427.77x = 126,326,464,107.56
  5. Step 5: Solve for x
    x = 126,326,464,107.56/354,427.77
  6. Step 6: Final answer
    x = 356,423.72

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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.