Home / 285,215.95-393,602.68-156,152.28

Finding the Fourth Proportional to 285,215.95, 393,602.68 and 156,152.28

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Solution

The fourth proportional to 285,215.95, 393,602.68 and 156,152.28 is: 215,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,215.95 : 393,602.68 = 156,152.28 : x
  2. Step 2: Convert to fraction form
    285,215.95/393,602.68 = 156,152.28/x
  3. Step 3: Cross multiply
    285,215.95x = 393,602.68 × 156,152.28
  4. Step 4: Simplify right side
    285,215.95x = 61,461,955,896.11
  5. Step 5: Solve for x
    x = 61,461,955,896.11/285,215.95
  6. Step 6: Final answer
    x = 215,492.70

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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.