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Finding the Fourth Proportional to 212,798,929.80, 293,662,390.44 and 115,013,785.80

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Solution

The fourth proportional to 212,798,929.80, 293,662,390.44 and 115,013,785.80 is: 158,718,952.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,798,929.80 : 293,662,390.44 = 115,013,785.80 : x
  2. Step 2: Convert to fraction form
    212,798,929.80/293,662,390.44 = 115,013,785.80/x
  3. Step 3: Cross multiply
    212,798,929.80x = 293,662,390.44 × 115,013,785.80
  4. Step 4: Simplify right side
    212,798,929.80x = 33,775,223,271,582,128
  5. Step 5: Solve for x
    x = 33,775,223,271,582,128/212,798,929.80
  6. Step 6: Final answer
    x = 158,718,952.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.