Home / 211,412.64-316,968.30-99,031.55

Finding the Fourth Proportional to 211,412.64, 316,968.30 and 99,031.55

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Solution

The fourth proportional to 211,412.64, 316,968.30 and 99,031.55 is: 148,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,412.64 : 316,968.30 = 99,031.55 : x
  2. Step 2: Convert to fraction form
    211,412.64/316,968.30 = 99,031.55/x
  3. Step 3: Cross multiply
    211,412.64x = 316,968.30 × 99,031.55
  4. Step 4: Simplify right side
    211,412.64x = 31,389,860,465.02
  5. Step 5: Solve for x
    x = 31,389,860,465.02/211,412.64
  6. Step 6: Final answer
    x = 148,476.74

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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.