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Finding the Fourth Proportional to 384,710.40, 577,065.60 and 207,563.40

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Solution

The fourth proportional to 384,710.40, 577,065.60 and 207,563.40 is: 311,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,710.40 : 577,065.60 = 207,563.40 : x
  2. Step 2: Convert to fraction form
    384,710.40/577,065.60 = 207,563.40/x
  3. Step 3: Cross multiply
    384,710.40x = 577,065.60 × 207,563.40
  4. Step 4: Simplify right side
    384,710.40x = 119,777,697,959.04
  5. Step 5: Solve for x
    x = 119,777,697,959.04/384,710.40
  6. Step 6: Final answer
    x = 311,345.10

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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.