Home / 420,026.49-629,926.71-153,788.40

Finding the Fourth Proportional to 420,026.49, 629,926.71 and 153,788.40

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Solution

The fourth proportional to 420,026.49, 629,926.71 and 153,788.40 is: 230,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,026.49 : 629,926.71 = 153,788.40 : x
  2. Step 2: Convert to fraction form
    420,026.49/629,926.71 = 153,788.40/x
  3. Step 3: Cross multiply
    420,026.49x = 629,926.71 × 153,788.40
  4. Step 4: Simplify right side
    420,026.49x = 96,875,420,848.16
  5. Step 5: Solve for x
    x = 96,875,420,848.16/420,026.49
  6. Step 6: Final answer
    x = 230,641.22

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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.