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Finding the Fourth Proportional to 340,816.80, 511,225.20 and 307,639.20

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Solution

The fourth proportional to 340,816.80, 511,225.20 and 307,639.20 is: 461,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,816.80 : 511,225.20 = 307,639.20 : x
  2. Step 2: Convert to fraction form
    340,816.80/511,225.20 = 307,639.20/x
  3. Step 3: Cross multiply
    340,816.80x = 511,225.20 × 307,639.20
  4. Step 4: Simplify right side
    340,816.80x = 157,272,911,547.84
  5. Step 5: Solve for x
    x = 157,272,911,547.84/340,816.80
  6. Step 6: Final answer
    x = 461,458.80

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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.