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Finding the Fourth Proportional to 384,319.71, 530,582.52 and 255,432.93

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Solution

The fourth proportional to 384,319.71, 530,582.52 and 255,432.93 is: 352,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,319.71 : 530,582.52 = 255,432.93 : x
  2. Step 2: Convert to fraction form
    384,319.71/530,582.52 = 255,432.93/x
  3. Step 3: Cross multiply
    384,319.71x = 530,582.52 × 255,432.93
  4. Step 4: Simplify right side
    384,319.71x = 135,528,247,690.38
  5. Step 5: Solve for x
    x = 135,528,247,690.38/384,319.71
  6. Step 6: Final answer
    x = 352,644.54

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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.