Home / 287,901,823.22-397,303,319.34-155,742,493.98

Finding the Fourth Proportional to 287,901,823.22, 397,303,319.34 and 155,742,493.98

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Solution

The fourth proportional to 287,901,823.22, 397,303,319.34 and 155,742,493.98 is: 214,923,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,901,823.22 : 397,303,319.34 = 155,742,493.98 : x
  2. Step 2: Convert to fraction form
    287,901,823.22/397,303,319.34 = 155,742,493.98/x
  3. Step 3: Cross multiply
    287,901,823.22x = 397,303,319.34 × 155,742,493.98
  4. Step 4: Simplify right side
    287,901,823.22x = 61,877,009,820,543,960
  5. Step 5: Solve for x
    x = 61,877,009,820,543,960/287,901,823.22
  6. Step 6: Final answer
    x = 214,923,994.33

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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.