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Finding the Fourth Proportional to 415,686.76, 573,840.83 and 243,580.84

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Solution

The fourth proportional to 415,686.76, 573,840.83 and 243,580.84 is: 336,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,686.76 : 573,840.83 = 243,580.84 : x
  2. Step 2: Convert to fraction form
    415,686.76/573,840.83 = 243,580.84/x
  3. Step 3: Cross multiply
    415,686.76x = 573,840.83 × 243,580.84
  4. Step 4: Simplify right side
    415,686.76x = 139,776,630,572.05
  5. Step 5: Solve for x
    x = 139,776,630,572.05/415,686.76
  6. Step 6: Final answer
    x = 336,254.71

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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.