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Finding the Fourth Proportional to 306,655.84, 423,185.01 and 170,686.86

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Solution

The fourth proportional to 306,655.84, 423,185.01 and 170,686.86 is: 235,547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,655.84 : 423,185.01 = 170,686.86 : x
  2. Step 2: Convert to fraction form
    306,655.84/423,185.01 = 170,686.86/x
  3. Step 3: Cross multiply
    306,655.84x = 423,185.01 × 170,686.86
  4. Step 4: Simplify right side
    306,655.84x = 72,232,120,709.36
  5. Step 5: Solve for x
    x = 72,232,120,709.36/306,655.84
  6. Step 6: Final answer
    x = 235,547.84

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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.