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Finding the Fourth Proportional to 285,210.84, 393,595.59 and 156,147.15

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Solution

The fourth proportional to 285,210.84, 393,595.59 and 156,147.15 is: 215,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,210.84 : 393,595.59 = 156,147.15 : x
  2. Step 2: Convert to fraction form
    285,210.84/393,595.59 = 156,147.15/x
  3. Step 3: Cross multiply
    285,210.84x = 393,595.59 × 156,147.15
  4. Step 4: Simplify right side
    285,210.84x = 61,458,829,631.07
  5. Step 5: Solve for x
    x = 61,458,829,631.07/285,210.84
  6. Step 6: Final answer
    x = 215,485.60

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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.