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Finding the Fourth Proportional to 384,555.84, 530,697.76 and 212,484.92

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Solution

The fourth proportional to 384,555.84, 530,697.76 and 212,484.92 is: 293,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,555.84 : 530,697.76 = 212,484.92 : x
  2. Step 2: Convert to fraction form
    384,555.84/530,697.76 = 212,484.92/x
  3. Step 3: Cross multiply
    384,555.84x = 530,697.76 × 212,484.92
  4. Step 4: Simplify right side
    384,555.84x = 112,765,271,077.78
  5. Step 5: Solve for x
    x = 112,765,271,077.78/384,555.84
  6. Step 6: Final answer
    x = 293,235.10

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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.