Home / 209,484,700.16-289,124,065.28-121,433,776.64

Finding the Fourth Proportional to 209,484,700.16, 289,124,065.28 and 121,433,776.64

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Solution

The fourth proportional to 209,484,700.16, 289,124,065.28 and 121,433,776.64 is: 167,599,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,484,700.16 : 289,124,065.28 = 121,433,776.64 : x
  2. Step 2: Convert to fraction form
    209,484,700.16/289,124,065.28 = 121,433,776.64/x
  3. Step 3: Cross multiply
    209,484,700.16x = 289,124,065.28 × 121,433,776.64
  4. Step 4: Simplify right side
    209,484,700.16x = 35,109,427,164,460,296
  5. Step 5: Solve for x
    x = 35,109,427,164,460,296/209,484,700.16
  6. Step 6: Final answer
    x = 167,599,004.31

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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.