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Finding the Fourth Proportional to 519,280.56, 778,920.36 and 145,303.56

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Solution

The fourth proportional to 519,280.56, 778,920.36 and 145,303.56 is: 217,955.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,280.56 : 778,920.36 = 145,303.56 : x
  2. Step 2: Convert to fraction form
    519,280.56/778,920.36 = 145,303.56/x
  3. Step 3: Cross multiply
    519,280.56x = 778,920.36 × 145,303.56
  4. Step 4: Simplify right side
    519,280.56x = 113,179,901,264.48
  5. Step 5: Solve for x
    x = 113,179,901,264.48/519,280.56
  6. Step 6: Final answer
    x = 217,955.21

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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.