Home / 287,864,220.60-431,796,330.90-142,320,245.40

Finding the Fourth Proportional to 287,864,220.60, 431,796,330.90 and 142,320,245.40

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Solution

The fourth proportional to 287,864,220.60, 431,796,330.90 and 142,320,245.40 is: 213,480,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,220.60 : 431,796,330.90 = 142,320,245.40 : x
  2. Step 2: Convert to fraction form
    287,864,220.60/431,796,330.90 = 142,320,245.40/x
  3. Step 3: Cross multiply
    287,864,220.60x = 431,796,330.90 × 142,320,245.40
  4. Step 4: Simplify right side
    287,864,220.60x = 61,453,359,776,507,600
  5. Step 5: Solve for x
    x = 61,453,359,776,507,600/287,864,220.60
  6. Step 6: Final answer
    x = 213,480,368.10

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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.