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Finding the Fourth Proportional to 519,130.60, 778,811.10 and 238,580.20

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Solution

The fourth proportional to 519,130.60, 778,811.10 and 238,580.20 is: 357,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,130.60 : 778,811.10 = 238,580.20 : x
  2. Step 2: Convert to fraction form
    519,130.60/778,811.10 = 238,580.20/x
  3. Step 3: Cross multiply
    519,130.60x = 778,811.10 × 238,580.20
  4. Step 4: Simplify right side
    519,130.60x = 185,808,908,000.22
  5. Step 5: Solve for x
    x = 185,808,908,000.22/519,130.60
  6. Step 6: Final answer
    x = 357,923.24

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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.