Home / 465,415.07-642,281.51-258,702.87

Finding the Fourth Proportional to 465,415.07, 642,281.51 and 258,702.87

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Solution

The fourth proportional to 465,415.07, 642,281.51 and 258,702.87 is: 357,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,415.07 : 642,281.51 = 258,702.87 : x
  2. Step 2: Convert to fraction form
    465,415.07/642,281.51 = 258,702.87/x
  3. Step 3: Cross multiply
    465,415.07x = 642,281.51 × 258,702.87
  4. Step 4: Simplify right side
    465,415.07x = 166,160,070,631.69
  5. Step 5: Solve for x
    x = 166,160,070,631.69/465,415.07
  6. Step 6: Final answer
    x = 357,014.80

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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.