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Finding the Fourth Proportional to 286,017.84, 394,697.88 and 158,690.16

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Solution

The fourth proportional to 286,017.84, 394,697.88 and 158,690.16 is: 218,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,017.84 : 394,697.88 = 158,690.16 : x
  2. Step 2: Convert to fraction form
    286,017.84/394,697.88 = 158,690.16/x
  3. Step 3: Cross multiply
    286,017.84x = 394,697.88 × 158,690.16
  4. Step 4: Simplify right side
    286,017.84x = 62,634,669,728.86
  5. Step 5: Solve for x
    x = 62,634,669,728.86/286,017.84
  6. Step 6: Final answer
    x = 218,988.68

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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.