Home / 208,386.30-287,567.10-122,343.84

Finding the Fourth Proportional to 208,386.30, 287,567.10 and 122,343.84

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Solution

The fourth proportional to 208,386.30, 287,567.10 and 122,343.84 is: 168,830.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,386.30 : 287,567.10 = 122,343.84 : x
  2. Step 2: Convert to fraction form
    208,386.30/287,567.10 = 122,343.84/x
  3. Step 3: Cross multiply
    208,386.30x = 287,567.10 × 122,343.84
  4. Step 4: Simplify right side
    208,386.30x = 35,182,063,271.66
  5. Step 5: Solve for x
    x = 35,182,063,271.66/208,386.30
  6. Step 6: Final answer
    x = 168,830.98

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1.5x scale

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.