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Finding the Fourth Proportional to 278,482.40, 384,307.64 and 151,157.96

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Solution

The fourth proportional to 278,482.40, 384,307.64 and 151,157.96 is: 208,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,482.40 : 384,307.64 = 151,157.96 : x
  2. Step 2: Convert to fraction form
    278,482.40/384,307.64 = 151,157.96/x
  3. Step 3: Cross multiply
    278,482.40x = 384,307.64 × 151,157.96
  4. Step 4: Simplify right side
    278,482.40x = 58,091,158,874.81
  5. Step 5: Solve for x
    x = 58,091,158,874.81/278,482.40
  6. Step 6: Final answer
    x = 208,599.03

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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.