Home / 283,639.03-391,421.85-156,314.63

Finding the Fourth Proportional to 283,639.03, 391,421.85 and 156,314.63

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Solution

The fourth proportional to 283,639.03, 391,421.85 and 156,314.63 is: 215,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,639.03 : 391,421.85 = 156,314.63 : x
  2. Step 2: Convert to fraction form
    283,639.03/391,421.85 = 156,314.63/x
  3. Step 3: Cross multiply
    283,639.03x = 391,421.85 × 156,314.63
  4. Step 4: Simplify right side
    283,639.03x = 61,184,961,656.67
  5. Step 5: Solve for x
    x = 61,184,961,656.67/283,639.03
  6. Step 6: Final answer
    x = 215,714.18

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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.