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Finding the Fourth Proportional to 210,658.28, 316,004.22 and 70,417.64

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Solution

The fourth proportional to 210,658.28, 316,004.22 and 70,417.64 is: 105,632.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,658.28 : 316,004.22 = 70,417.64 : x
  2. Step 2: Convert to fraction form
    210,658.28/316,004.22 = 70,417.64/x
  3. Step 3: Cross multiply
    210,658.28x = 316,004.22 × 70,417.64
  4. Step 4: Simplify right side
    210,658.28x = 22,252,271,402.44
  5. Step 5: Solve for x
    x = 22,252,271,402.44/210,658.28
  6. Step 6: Final answer
    x = 105,632.08

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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.