Home / 282,938,980.88-390,455,733.48-157,488,471.56

Finding the Fourth Proportional to 282,938,980.88, 390,455,733.48 and 157,488,471.56

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Solution

The fourth proportional to 282,938,980.88, 390,455,733.48 and 157,488,471.56 is: 217,334,057.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,938,980.88 : 390,455,733.48 = 157,488,471.56 : x
  2. Step 2: Convert to fraction form
    282,938,980.88/390,455,733.48 = 157,488,471.56/x
  3. Step 3: Cross multiply
    282,938,980.88x = 390,455,733.48 × 157,488,471.56
  4. Step 4: Simplify right side
    282,938,980.88x = 61,492,276,677,603,920
  5. Step 5: Solve for x
    x = 61,492,276,677,603,920/282,938,980.88
  6. Step 6: Final answer
    x = 217,334,057.28

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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.