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Finding the Fourth Proportional to 518,877.60, 778,258.80 and 144,938.40

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Solution

The fourth proportional to 518,877.60, 778,258.80 and 144,938.40 is: 217,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,877.60 : 778,258.80 = 144,938.40 : x
  2. Step 2: Convert to fraction form
    518,877.60/778,258.80 = 144,938.40/x
  3. Step 3: Cross multiply
    518,877.60x = 778,258.80 × 144,938.40
  4. Step 4: Simplify right side
    518,877.60x = 112,799,585,257.92
  5. Step 5: Solve for x
    x = 112,799,585,257.92/518,877.60
  6. Step 6: Final answer
    x = 217,391.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.