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Finding the Fourth Proportional to 287,482.80, 432,001.80 and 253,268.40

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Solution

The fourth proportional to 287,482.80, 432,001.80 and 253,268.40 is: 380,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,482.80 : 432,001.80 = 253,268.40 : x
  2. Step 2: Convert to fraction form
    287,482.80/432,001.80 = 253,268.40/x
  3. Step 3: Cross multiply
    287,482.80x = 432,001.80 × 253,268.40
  4. Step 4: Simplify right side
    287,482.80x = 109,412,404,683.12
  5. Step 5: Solve for x
    x = 109,412,404,683.12/287,482.80
  6. Step 6: Final answer
    x = 380,587.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.