Home / 420,216.48-579,881.58-248,190.12

Finding the Fourth Proportional to 420,216.48, 579,881.58 and 248,190.12

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Solution

The fourth proportional to 420,216.48, 579,881.58 and 248,190.12 is: 342,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,216.48 : 579,881.58 = 248,190.12 : x
  2. Step 2: Convert to fraction form
    420,216.48/579,881.58 = 248,190.12/x
  3. Step 3: Cross multiply
    420,216.48x = 579,881.58 × 248,190.12
  4. Step 4: Simplify right side
    420,216.48x = 143,920,878,925.99
  5. Step 5: Solve for x
    x = 143,920,878,925.99/420,216.48
  6. Step 6: Final answer
    x = 342,492.23

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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.