Home / 438,746.40-605,159.64-285,502.50

Finding the Fourth Proportional to 438,746.40, 605,159.64 and 285,502.50

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Solution

The fourth proportional to 438,746.40, 605,159.64 and 285,502.50 is: 393,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,746.40 : 605,159.64 = 285,502.50 : x
  2. Step 2: Convert to fraction form
    438,746.40/605,159.64 = 285,502.50/x
  3. Step 3: Cross multiply
    438,746.40x = 605,159.64 × 285,502.50
  4. Step 4: Simplify right side
    438,746.40x = 172,774,590,119.10
  5. Step 5: Solve for x
    x = 172,774,590,119.10/438,746.40
  6. Step 6: Final answer
    x = 393,791.47

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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.