Home / 346,009.90-518,955-156,426.18

Finding the Fourth Proportional to 346,009.90, 518,955 and 156,426.18

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Solution

The fourth proportional to 346,009.90, 518,955 and 156,426.18 is: 234,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,009.90 : 518,955 = 156,426.18 : x
  2. Step 2: Convert to fraction form
    346,009.90/518,955 = 156,426.18/x
  3. Step 3: Cross multiply
    346,009.90x = 518,955 × 156,426.18
  4. Step 4: Simplify right side
    346,009.90x = 81,178,148,241.90
  5. Step 5: Solve for x
    x = 81,178,148,241.90/346,009.90
  6. Step 6: Final answer
    x = 234,612.21

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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.