Home / 309,143.04-426,582.40-173,158.40

Finding the Fourth Proportional to 309,143.04, 426,582.40 and 173,158.40

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Solution

The fourth proportional to 309,143.04, 426,582.40 and 173,158.40 is: 238,938.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,143.04 : 426,582.40 = 173,158.40 : x
  2. Step 2: Convert to fraction form
    309,143.04/426,582.40 = 173,158.40/x
  3. Step 3: Cross multiply
    309,143.04x = 426,582.40 × 173,158.40
  4. Step 4: Simplify right side
    309,143.04x = 73,866,325,852.16
  5. Step 5: Solve for x
    x = 73,866,325,852.16/309,143.04
  6. Step 6: Final answer
    x = 238,938.99

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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.