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Finding the Fourth Proportional to 285,465.80, 428,097.90 and 98,433.80

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Solution

The fourth proportional to 285,465.80, 428,097.90 and 98,433.80 is: 147,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,465.80 : 428,097.90 = 98,433.80 : x
  2. Step 2: Convert to fraction form
    285,465.80/428,097.90 = 98,433.80/x
  3. Step 3: Cross multiply
    285,465.80x = 428,097.90 × 98,433.80
  4. Step 4: Simplify right side
    285,465.80x = 42,139,303,069.02
  5. Step 5: Solve for x
    x = 42,139,303,069.02/285,465.80
  6. Step 6: Final answer
    x = 147,615.94

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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.