Home / 278,707,507.81-384,640,871.00-153,281,803.32

Finding the Fourth Proportional to 278,707,507.81, 384,640,871.00 and 153,281,803.32

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Solution

The fourth proportional to 278,707,507.81, 384,640,871.00 and 153,281,803.32 is: 211,542,368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,707,507.81 : 384,640,871.00 = 153,281,803.32 : x
  2. Step 2: Convert to fraction form
    278,707,507.81/384,640,871.00 = 153,281,803.32/x
  3. Step 3: Cross multiply
    278,707,507.81x = 384,640,871.00 × 153,281,803.32
  4. Step 4: Simplify right side
    278,707,507.81x = 58,958,446,337,838,696
  5. Step 5: Solve for x
    x = 58,958,446,337,838,696/278,707,507.81
  6. Step 6: Final answer
    x = 211,542,368.56

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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.