Home / 255,637,995.20-383,456,992.80-163,804,990.40

Finding the Fourth Proportional to 255,637,995.20, 383,456,992.80 and 163,804,990.40

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Solution

The fourth proportional to 255,637,995.20, 383,456,992.80 and 163,804,990.40 is: 245,707,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,637,995.20 : 383,456,992.80 = 163,804,990.40 : x
  2. Step 2: Convert to fraction form
    255,637,995.20/383,456,992.80 = 163,804,990.40/x
  3. Step 3: Cross multiply
    255,637,995.20x = 383,456,992.80 × 163,804,990.40
  4. Step 4: Simplify right side
    255,637,995.20x = 62,812,169,024,416,872
  5. Step 5: Solve for x
    x = 62,812,169,024,416,872/255,637,995.20
  6. Step 6: Final answer
    x = 245,707,485.60

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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.