Home / 311,950,312.61-430,504,882.77-172,721,086.68

Finding the Fourth Proportional to 311,950,312.61, 430,504,882.77 and 172,721,086.68

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Solution

The fourth proportional to 311,950,312.61, 430,504,882.77 and 172,721,086.68 is: 238,362,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,950,312.61 : 430,504,882.77 = 172,721,086.68 : x
  2. Step 2: Convert to fraction form
    311,950,312.61/430,504,882.77 = 172,721,086.68/x
  3. Step 3: Cross multiply
    311,950,312.61x = 430,504,882.77 × 172,721,086.68
  4. Step 4: Simplify right side
    311,950,312.61x = 74,357,271,173,080,416
  5. Step 5: Solve for x
    x = 74,357,271,173,080,416/311,950,312.61
  6. Step 6: Final answer
    x = 238,362,547.39

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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.