Home / 438,140.20-657,210.30-171,909.40

Finding the Fourth Proportional to 438,140.20, 657,210.30 and 171,909.40

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Solution

The fourth proportional to 438,140.20, 657,210.30 and 171,909.40 is: 257,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,140.20 : 657,210.30 = 171,909.40 : x
  2. Step 2: Convert to fraction form
    438,140.20/657,210.30 = 171,909.40/x
  3. Step 3: Cross multiply
    438,140.20x = 657,210.30 × 171,909.40
  4. Step 4: Simplify right side
    438,140.20x = 112,980,628,346.82
  5. Step 5: Solve for x
    x = 112,980,628,346.82/438,140.20
  6. Step 6: Final answer
    x = 257,864.10

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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.