Home / 278,455.59-384,269.09-151,131.20

Finding the Fourth Proportional to 278,455.59, 384,269.09 and 151,131.20

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Solution

The fourth proportional to 278,455.59, 384,269.09 and 151,131.20 is: 208,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,455.59 : 384,269.09 = 151,131.20 : x
  2. Step 2: Convert to fraction form
    278,455.59/384,269.09 = 151,131.20/x
  3. Step 3: Cross multiply
    278,455.59x = 384,269.09 × 151,131.20
  4. Step 4: Simplify right side
    278,455.59x = 58,075,046,017.61
  5. Step 5: Solve for x
    x = 58,075,046,017.61/278,455.59
  6. Step 6: Final answer
    x = 208,561.25

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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.