Home / 282,918.49-390,430.28-153,859.73

Finding the Fourth Proportional to 282,918.49, 390,430.28 and 153,859.73

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Solution

The fourth proportional to 282,918.49, 390,430.28 and 153,859.73 is: 212,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,918.49 : 390,430.28 = 153,859.73 : x
  2. Step 2: Convert to fraction form
    282,918.49/390,430.28 = 153,859.73/x
  3. Step 3: Cross multiply
    282,918.49x = 390,430.28 × 153,859.73
  4. Step 4: Simplify right side
    282,918.49x = 60,071,495,897.12
  5. Step 5: Solve for x
    x = 60,071,495,897.12/282,918.49
  6. Step 6: Final answer
    x = 212,327.93

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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.