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Finding the Fourth Proportional to 464,218.92, 640,736.07 and 283,030.76

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Solution

The fourth proportional to 464,218.92, 640,736.07 and 283,030.76 is: 390,651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,218.92 : 640,736.07 = 283,030.76 : x
  2. Step 2: Convert to fraction form
    464,218.92/640,736.07 = 283,030.76/x
  3. Step 3: Cross multiply
    464,218.92x = 640,736.07 × 283,030.76
  4. Step 4: Simplify right side
    464,218.92x = 181,348,016,851.51
  5. Step 5: Solve for x
    x = 181,348,016,851.51/464,218.92
  6. Step 6: Final answer
    x = 390,651.93

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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.