Home / 389,688,038.10-537,765,206.86-211,067,482.61

Finding the Fourth Proportional to 389,688,038.10, 537,765,206.86 and 211,067,482.61

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Solution

The fourth proportional to 389,688,038.10, 537,765,206.86 and 211,067,482.61 is: 291,270,804.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,688,038.10 : 537,765,206.86 = 211,067,482.61 : x
  2. Step 2: Convert to fraction form
    389,688,038.10/537,765,206.86 = 211,067,482.61/x
  3. Step 3: Cross multiply
    389,688,038.10x = 537,765,206.86 × 211,067,482.61
  4. Step 4: Simplify right side
    389,688,038.10x = 113,504,748,447,186,112
  5. Step 5: Solve for x
    x = 113,504,748,447,186,112/389,688,038.10
  6. Step 6: Final answer
    x = 291,270,804.72

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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.