Home / 287,739,000.20-431,671,485.90-142,242,264.20

Finding the Fourth Proportional to 287,739,000.20, 431,671,485.90 and 142,242,264.20

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Solution

The fourth proportional to 287,739,000.20, 431,671,485.90 and 142,242,264.20 is: 213,394,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,739,000.20 : 431,671,485.90 = 142,242,264.20 : x
  2. Step 2: Convert to fraction form
    287,739,000.20/431,671,485.90 = 142,242,264.20/x
  3. Step 3: Cross multiply
    287,739,000.20x = 431,671,485.90 × 142,242,264.20
  4. Step 4: Simplify right side
    287,739,000.20x = 61,401,929,544,994,368
  5. Step 5: Solve for x
    x = 61,401,929,544,994,368/287,739,000.20
  6. Step 6: Final answer
    x = 213,394,532.90

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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.