Home / 426,743.48-640,516.98-216,532.28

Finding the Fourth Proportional to 426,743.48, 640,516.98 and 216,532.28

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Solution

The fourth proportional to 426,743.48, 640,516.98 and 216,532.28 is: 325,002.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,743.48 : 640,516.98 = 216,532.28 : x
  2. Step 2: Convert to fraction form
    426,743.48/640,516.98 = 216,532.28/x
  3. Step 3: Cross multiply
    426,743.48x = 640,516.98 × 216,532.28
  4. Step 4: Simplify right side
    426,743.48x = 138,692,602,058.11
  5. Step 5: Solve for x
    x = 138,692,602,058.11/426,743.48
  6. Step 6: Final answer
    x = 325,002.28

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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.