Finding the Fourth Proportional to 258,390,886.12, 387,430,216.14 and 102,968,604.52
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Solution
The fourth proportional to 258,390,886.12, 387,430,216.14 and 102,968,604.52 is: 154,390,695.83
Step by Step Solution
- Step 1: Write the proportion equation
258,390,886.12 : 387,430,216.14 = 102,968,604.52 : x - Step 2: Convert to fraction form
258,390,886.12/387,430,216.14 = 102,968,604.52/x - Step 3: Cross multiply
258,390,886.12x = 387,430,216.14 × 102,968,604.52 - Step 4: Simplify right side
258,390,886.12x = 39,893,148,704,817,776 - Step 5: Solve for x
x = 39,893,148,704,817,776/258,390,886.12 - Step 6: Final answer
x = 154,390,695.83
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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.