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Finding the Fourth Proportional to 384,068.89, 530,214.45 and 280,587.07

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Solution

The fourth proportional to 384,068.89, 530,214.45 and 280,587.07 is: 387,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,068.89 : 530,214.45 = 280,587.07 : x
  2. Step 2: Convert to fraction form
    384,068.89/530,214.45 = 280,587.07/x
  3. Step 3: Cross multiply
    384,068.89x = 530,214.45 × 280,587.07
  4. Step 4: Simplify right side
    384,068.89x = 148,771,316,346.09
  5. Step 5: Solve for x
    x = 148,771,316,346.09/384,068.89
  6. Step 6: Final answer
    x = 387,355.82

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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.