Home / 211,298,547.15-291,548,330.06-121,988,943.70

Finding the Fourth Proportional to 211,298,547.15, 291,548,330.06 and 121,988,943.70

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Solution

The fourth proportional to 211,298,547.15, 291,548,330.06 and 121,988,943.70 is: 168,319,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,298,547.15 : 291,548,330.06 = 121,988,943.70 : x
  2. Step 2: Convert to fraction form
    211,298,547.15/291,548,330.06 = 121,988,943.70/x
  3. Step 3: Cross multiply
    211,298,547.15x = 291,548,330.06 × 121,988,943.70
  4. Step 4: Simplify right side
    211,298,547.15x = 35,565,672,821,395,664
  5. Step 5: Solve for x
    x = 35,565,672,821,395,664/211,298,547.15
  6. Step 6: Final answer
    x = 168,319,533.20

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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.