Finding the Fourth Proportional to 258,390,885.12, 387,430,214.64 and 102,968,603.52
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Solution
The fourth proportional to 258,390,885.12, 387,430,214.64 and 102,968,603.52 is: 154,390,694.33
Step by Step Solution
- Step 1: Write the proportion equation
258,390,885.12 : 387,430,214.64 = 102,968,603.52 : x - Step 2: Convert to fraction form
258,390,885.12/387,430,214.64 = 102,968,603.52/x - Step 3: Cross multiply
258,390,885.12x = 387,430,214.64 × 102,968,603.52 - Step 4: Simplify right side
258,390,885.12x = 39,893,148,162,934,656 - Step 5: Solve for x
x = 39,893,148,162,934,656/258,390,885.12 - Step 6: Final answer
x = 154,390,694.33
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.