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Finding the Fourth Proportional to 357,038.40, 492,717.92 and 195,890.40

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Solution

The fourth proportional to 357,038.40, 492,717.92 and 195,890.40 is: 270,331.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,038.40 : 492,717.92 = 195,890.40 : x
  2. Step 2: Convert to fraction form
    357,038.40/492,717.92 = 195,890.40/x
  3. Step 3: Cross multiply
    357,038.40x = 492,717.92 × 195,890.40
  4. Step 4: Simplify right side
    357,038.40x = 96,518,710,435.97
  5. Step 5: Solve for x
    x = 96,518,710,435.97/357,038.40
  6. Step 6: Final answer
    x = 270,331.46

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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.