Home / 420,302,312.71-580,018,316.30-234,669,970.87

Finding the Fourth Proportional to 420,302,312.71, 580,018,316.30 and 234,669,970.87

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Solution

The fourth proportional to 420,302,312.71, 580,018,316.30 and 234,669,970.87 is: 323,845,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,302,312.71 : 580,018,316.30 = 234,669,970.87 : x
  2. Step 2: Convert to fraction form
    420,302,312.71/580,018,316.30 = 234,669,970.87/x
  3. Step 3: Cross multiply
    420,302,312.71x = 580,018,316.30 × 234,669,970.87
  4. Step 4: Simplify right side
    420,302,312.71x = 136,112,881,390,187,440
  5. Step 5: Solve for x
    x = 136,112,881,390,187,440/420,302,312.71
  6. Step 6: Final answer
    x = 323,845,187.79

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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.