Home / 429,001.24-643,501.80-148,518.40

Finding the Fourth Proportional to 429,001.24, 643,501.80 and 148,518.40

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Solution

The fourth proportional to 429,001.24, 643,501.80 and 148,518.40 is: 222,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,001.24 : 643,501.80 = 148,518.40 : x
  2. Step 2: Convert to fraction form
    429,001.24/643,501.80 = 148,518.40/x
  3. Step 3: Cross multiply
    429,001.24x = 643,501.80 × 148,518.40
  4. Step 4: Simplify right side
    429,001.24x = 95,571,857,733.12
  5. Step 5: Solve for x
    x = 95,571,857,733.12/429,001.24
  6. Step 6: Final answer
    x = 222,777.58

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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.