Home / 286,619.40-429,929.10-86,930.10

Finding the Fourth Proportional to 286,619.40, 429,929.10 and 86,930.10

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Solution

The fourth proportional to 286,619.40, 429,929.10 and 86,930.10 is: 130,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,619.40 : 429,929.10 = 86,930.10 : x
  2. Step 2: Convert to fraction form
    286,619.40/429,929.10 = 86,930.10/x
  3. Step 3: Cross multiply
    286,619.40x = 429,929.10 × 86,930.10
  4. Step 4: Simplify right side
    286,619.40x = 37,373,779,655.91
  5. Step 5: Solve for x
    x = 37,373,779,655.91/286,619.40
  6. Step 6: Final answer
    x = 130,395.15

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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.