Home / 358,692,563.20-538,133,323.20-128,637,659.20

Finding the Fourth Proportional to 358,692,563.20, 538,133,323.20 and 128,637,659.20

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Solution

The fourth proportional to 358,692,563.20, 538,133,323.20 and 128,637,659.20 is: 192,990,371.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,692,563.20 : 538,133,323.20 = 128,637,659.20 : x
  2. Step 2: Convert to fraction form
    358,692,563.20/538,133,323.20 = 128,637,659.20/x
  3. Step 3: Cross multiply
    358,692,563.20x = 538,133,323.20 × 128,637,659.20
  4. Step 4: Simplify right side
    358,692,563.20x = 69,224,211,033,965,064
  5. Step 5: Solve for x
    x = 69,224,211,033,965,064/358,692,563.20
  6. Step 6: Final answer
    x = 192,990,371.52

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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.