Home / 258,031.02-387,070.96-100,271.64

Finding the Fourth Proportional to 258,031.02, 387,070.96 and 100,271.64

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Solution

The fourth proportional to 258,031.02, 387,070.96 and 100,271.64 is: 150,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,031.02 : 387,070.96 = 100,271.64 : x
  2. Step 2: Convert to fraction form
    258,031.02/387,070.96 = 100,271.64/x
  3. Step 3: Cross multiply
    258,031.02x = 387,070.96 × 100,271.64
  4. Step 4: Simplify right side
    258,031.02x = 38,812,239,955.57
  5. Step 5: Solve for x
    x = 38,812,239,955.57/258,031.02
  6. Step 6: Final answer
    x = 150,416.95

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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.