Home / 287,712,209.20-431,072,302.20-134,043,091.60

Finding the Fourth Proportional to 287,712,209.20, 431,072,302.20 and 134,043,091.60

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Solution

The fourth proportional to 287,712,209.20, 431,072,302.20 and 134,043,091.60 is: 200,833,549.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,209.20 : 431,072,302.20 = 134,043,091.60 : x
  2. Step 2: Convert to fraction form
    287,712,209.20/431,072,302.20 = 134,043,091.60/x
  3. Step 3: Cross multiply
    287,712,209.20x = 431,072,302.20 × 134,043,091.60
  4. Step 4: Simplify right side
    287,712,209.20x = 57,782,264,090,017,480
  5. Step 5: Solve for x
    x = 57,782,264,090,017,480/287,712,209.20
  6. Step 6: Final answer
    x = 200,833,549.09

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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.