Home / 285,281.19-393,688.08-157,956.80

Finding the Fourth Proportional to 285,281.19, 393,688.08 and 157,956.80

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Solution

The fourth proportional to 285,281.19, 393,688.08 and 157,956.80 is: 217,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,281.19 : 393,688.08 = 157,956.80 : x
  2. Step 2: Convert to fraction form
    285,281.19/393,688.08 = 157,956.80/x
  3. Step 3: Cross multiply
    285,281.19x = 393,688.08 × 157,956.80
  4. Step 4: Simplify right side
    285,281.19x = 62,185,707,346.50
  5. Step 5: Solve for x
    x = 62,185,707,346.50/285,281.19
  6. Step 6: Final answer
    x = 217,980.40

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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.