Home / 245,439.36-338,699.55-138,006.63

Finding the Fourth Proportional to 245,439.36, 338,699.55 and 138,006.63

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Solution

The fourth proportional to 245,439.36, 338,699.55 and 138,006.63 is: 190,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,439.36 : 338,699.55 = 138,006.63 : x
  2. Step 2: Convert to fraction form
    245,439.36/338,699.55 = 138,006.63/x
  3. Step 3: Cross multiply
    245,439.36x = 338,699.55 × 138,006.63
  4. Step 4: Simplify right side
    245,439.36x = 46,742,783,478.02
  5. Step 5: Solve for x
    x = 46,742,783,478.02/245,439.36
  6. Step 6: Final answer
    x = 190,445.34

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1.5x scale

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.