Home / 409,834,317.60-565,569,666.36-221,662,820.16

Finding the Fourth Proportional to 409,834,317.60, 565,569,666.36 and 221,662,820.16

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Solution

The fourth proportional to 409,834,317.60, 565,569,666.36 and 221,662,820.16 is: 305,893,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,834,317.60 : 565,569,666.36 = 221,662,820.16 : x
  2. Step 2: Convert to fraction form
    409,834,317.60/565,569,666.36 = 221,662,820.16/x
  3. Step 3: Cross multiply
    409,834,317.60x = 565,569,666.36 × 221,662,820.16
  4. Step 4: Simplify right side
    409,834,317.60x = 125,365,767,242,307,888
  5. Step 5: Solve for x
    x = 125,365,767,242,307,888/409,834,317.60
  6. Step 6: Final answer
    x = 305,893,776.73

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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.