Home / 285,068.79-393,403.10-157,756.23

Finding the Fourth Proportional to 285,068.79, 393,403.10 and 157,756.23

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Solution

The fourth proportional to 285,068.79, 393,403.10 and 157,756.23 is: 217,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,068.79 : 393,403.10 = 157,756.23 : x
  2. Step 2: Convert to fraction form
    285,068.79/393,403.10 = 157,756.23/x
  3. Step 3: Cross multiply
    285,068.79x = 393,403.10 × 157,756.23
  4. Step 4: Simplify right side
    285,068.79x = 62,061,789,137.53
  5. Step 5: Solve for x
    x = 62,061,789,137.53/285,068.79
  6. Step 6: Final answer
    x = 217,708.12

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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.