Home / 326,407.08-489,257.50-136,970.36

Finding the Fourth Proportional to 326,407.08, 489,257.50 and 136,970.36

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Solution

The fourth proportional to 326,407.08, 489,257.50 and 136,970.36 is: 205,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,407.08 : 489,257.50 = 136,970.36 : x
  2. Step 2: Convert to fraction form
    326,407.08/489,257.50 = 136,970.36/x
  3. Step 3: Cross multiply
    326,407.08x = 489,257.50 × 136,970.36
  4. Step 4: Simplify right side
    326,407.08x = 67,013,775,907.70
  5. Step 5: Solve for x
    x = 67,013,775,907.70/326,407.08
  6. Step 6: Final answer
    x = 205,307.36

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1.5x scale

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.