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Finding the Fourth Proportional to 388,547.20, 536,237.76 and 245,299.84

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Solution

The fourth proportional to 388,547.20, 536,237.76 and 245,299.84 is: 338,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,547.20 : 536,237.76 = 245,299.84 : x
  2. Step 2: Convert to fraction form
    388,547.20/536,237.76 = 245,299.84/x
  3. Step 3: Cross multiply
    388,547.20x = 536,237.76 × 245,299.84
  4. Step 4: Simplify right side
    388,547.20x = 131,539,036,729.96
  5. Step 5: Solve for x
    x = 131,539,036,729.96/388,547.20
  6. Step 6: Final answer
    x = 338,540.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.